Wash and dry the zucchini thoroughly. Slice them into fry-shaped sticks, about 3 to 4 inches long and 1/2 inch thick. Use a paper towel to pat them dry again to remove any excess moisture.
Prepare three shallow bowls. In the first bowl, place the flour. In the second, whisk the eggs. In the third, combine the Panko breadcrumbs, Parmesan cheese, garlic powder, onion powder, salt, and pepper.
Dredge each zucchini stick in the flour, shaking off the excess. Dip it into the beaten eggs, then press it firmly into the breadcrumb mixture until fully coated. Place the coated fries on a clean plate.
Preheat your air fryer to 400°F (200°C). Lightly spray the air fryer basket with cooking spray. Arrange the zucchini fries in a single layer, making sure they do not touch or overlap.
Cook the fries for 10 to 12 minutes, flipping them halfway through the cooking time. They are done when they are golden brown and crispy. Work in batches if necessary to avoid overcrowding the basket.